ASTROSAT CZTI

Data Quality Report

Orbit 59158

Creation date: 2026-09-03T15:35:16.798196
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1T05_264T01_9000006602_59158cztM0_level2.fits modeM0/AS1T05_264T01_9000006602_59158cztM0_level2_quad_clean.evt
Size (bytes)833,270,40092,540,160
Size794.7 MB 88.3 MB
Events in quadrant A3,498,107723,230
Events in quadrant B3,621,081789,131
Events in quadrant C5,293,016686,205
Events in quadrant D17,833,91367,886

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01540
B01540
C01540
D01540

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0160020
B0162050
C0211190
D0582290

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A7695831.078622%
B76961762.286902%
C76964085.301455%
D7696705591.670998%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 7695 7695 14 14 0.18% 0.18%
B 7696 7696 14 14 0.18% 0.18%
C 7696 7696 336 336 4.37% 4.37%
D 7696 7696 5848 5848 75.99% 75.99%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 10 251 98819 461.9 867 845 212.1
A 4 3 16849 75.45 867 845 212.1
A 3 14 14717 65.4 867 845 212.1
B 5 185 53574 281.47 863 829 187.4
B 4 236 52866 277.69 863 829 187.4
B 7 252 31918 165.91 863 829 187.4
C 5 250 1253744 5493.56 832 824 228.1
C 5 233 421883 1846.18 832 824 228.1
C 12 252 151148 659.11 832 824 228.1
D 12 1 13222980 176098.7 258 246 75.1
D 12 110 3081153 41031.13 258 246 75.1
D 8 240 249580 3320.6 258 246 75.1

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter

TCT plots

Parameter TCT0 TCT_healed
Tct